Reign of Güyük Khan
The kurultai, the great assembly of the Mongol princes, finally met near Karakorum in the summer of 1246, without Batu. Güyük was elected and enthroned that August.
Among the crowds of vassal rulers and envoys was John of Plano Carpini, sent by Pope Innocent IV to learn the Mongols' intentions. He described the tribute brought to the new khan: gold, silver, precious stones and silk garments, which he said filled some five hundred carts and were shared out between the khan and his chiefs.
Güyük's reply to the pope, written in Persian and sealed with his seal, survives in the Vatican archives. It rejected the pope's call to accept Christianity and demanded that he and the kings of Europe come in person to submit. Carpini's report on his mission warned that the Mongols intended further war in Europe and advised Christian rulers on how to resist them.
Government
Güyük moved quickly against his mother's favourites. Her confidante Fatima was tried and put to death, and ministers she had dismissed, among them Chinqai and Mahmud Yalavach, were restored. He also intervened in the affairs of the Chagatai khanate, replacing its ruler with his own friend Yesü Möngke.
Several of his leading officials, including Chinqai and his old tutor Qadaq, were Christians of the Church of the East, often called Nestorians. Carpini heard from Christians at the court that they expected the khan to become a Christian himself. He did not, but he treated the Christians with notable favour.